转载:Performing SQL Operations with Native Dynamic SQL # Performing SQL Operations with Native Dynamic SQL A happy and gracious flexibility … — Matthew Arnold This chapter shows you how to use native dynamic SQL (dynamic SQL for short), a PL/SQL interface that makes your programs more flexible, by...

转载: Rust: Raw string literals - rahul thakoor # r#“What is this?”# While working with Rust, you will often come across r#"something like this"# , especially when working with JSON and TOML files. It defines a raw string literal. When would you use a raw string literal and what...

转载: Beginner’s guide to Error Handling in Rust Error handling in Rust is very different if you’re coming from other languages. In languages like Java, JS, Python etc, you usually throw exceptions and return successful values. In Rust, you return something called a Result . The Result<T,...

转载:ORACLE-BASE - MERGE Statement Enhancements in Oracle Database 10g # Test Table The following examples use the table defined below. 1234CREATE TABLE test1 ASSELECT *FROM all_objectsWHERE 1=2; # Optional Clauses The MATCHED and NOT MATCHED clauses are now optional making all of the following...

转载: ORACLE-BASE - Hierarchical Queries in Oracle # Setup The following table contains hierarchical data. 123456789101112131415161718192021222324DROP TABLE tab1 PURGE;CREATE TABLE tab1 ( id NUMBER, parent_id NUMBER, CONSTRAINT tab1_pk PRIMARY KEY (id), CONSTRAINT tab1_tab1_fk FOREIGN KEY (parent_id)...

# GeoJSON GeoJSON is a format for encoding a variety of geographic data structures. GeoJSON supports the following geometry types: Point, LineString, Polygon, MultiPoint, MultiLineString, and MultiPolygon. Geometric objects with additional properties are Feature objects. Sets of features are...

路飞学城 - 学习文档 # HTML5 简介 HTML5 是 HTML 最新的修订版版，2014 年 10 月由 W3C 完成标准制定。它的设计的目的是为了在移动设备上支持多媒体。并且 HTML5 简单易学。 # 什么是 HTML5 HTML5 是下一代标准。HTML4.01 的上个版本诞生于 1999 年，HTML5 目前为止仍然处于完善之中。然而，大部分现代浏览器已经具备了某些 HTML5 支持 # HTML5 有趣的新特性 用于媒体播放的 video 和 audio 元素 新的特殊内容元素：比如 article , footer , header , nav ,...

# 不惧迅雨，不畏疾风 - 宫野贤治 不惧迅雨，不畏疾风。 不避严冬酷暑，日日身强气盛。 不思贪恋，不动火性， 时时乐天闲情。 习餐粗米，日食半升， 佐以豆酱，少许菜梗。 面对世事，直抒人生； 置已度外，其乐融融。 细心观察，铭记心中。 栖身松林旷野， 隐居茅舍屋中。 东边孩童疾苦，即往送药治病； 西边大妈受累， 便去帮忙助耕； 南边有人将逝， 慰其安神养性； 北边打架斗殴， 息事宁人调停。 逢旱灾伤心落泪， 遇冻害忧心忡忡。 不受褒誉，不受苦痛。 人人称我偶人，愿做凡夫俗子， 但是我竭尽， 平凡之人生。 # Auguries of Innocence 天真的预兆 - William...

转载: Clear explanation of Rust’s module system Rust’s module system is surprisingly confusing and causes a lot of frustration for beginners. In this post, I’ll explain the module system using practical examples so you get a clear understanding of how it works and can immediately start applying this...

# Rust for JavaScript Developers - Pattern Matching and Enums This is the fourth part in a series about introducing the Rust language to JavaScript developers. Here are all the chapters: Tooling Ecosystem Overview Variables and Data Types Functions and Control Flow Pattern Matching and Enums #...